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Permitted21/01206/FULSubmitted 5 years agoLoft conversion

44 Thornbury Avenue Southampton SO15 5DA

Erection of a part 2-storey, part single storey side/rear extension and roof alterations including dormer window to facilitate loft conversion (amendment to planning permission 21/00601/FUL)

Find on council portalDocuments (10)

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Progress

Submitted
31 Aug 2021
— completed
Validated
31 Aug 2021
— completed
Consultation
18 Oct 2021
— completed
Target date
26 Oct 2021
— completed
Decided
5 Nov 2021
— completed

Application details

Reference
21/01206/FUL
Local authority
Southampton
Postcode
SO15 5DA
Ward
Freemantle
Application type
Full
Property type
House

Key dates

Submitted
31 Aug 2021
Validated
31 Aug 2021
Comments close
18 Oct 2021
Target decision
26 Oct 2021
Decided
5 Nov 2021

10 documents · 0 comments · 5 constraints

Estimated project value

£32k–£87k

Typical UK cost for this job type, at South East rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.

Recently sold nearby

Inside the two years most owners do their major work — kitchens, bathrooms, rewires and lofts.

Homes here go for about £511,250 — the median of the last 8 market sales in SO15 5DA, £410,000 to £740,000.

Contains HM Land Registry data © Crown copyright and database right 2025. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.

Planning constraints

No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.

Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.

Nearby applications